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mmc: renesas_sdhi: workaround a regression when reinserting SD cards 

After the conversions of the reset routines, re-inserting SD cards
didn't work anymore. Apply this temporary workaround to have working SD
cards during the merge window. The issue will be fixed properly until
the final release.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20201008092533.76588-1-wsa+renesas@sang-engineering.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Wolfram Sang 2020-10-08 11:25:33 +02:00 committed by Ulf Hansson
parent 347f6be11d
commit db1af1e971
1 changed files with 13 additions and 0 deletions
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13
drivers/mmc/host/renesas_sdhi_core.c
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@ -572,6 +572,17 @@ static void renesas_sdhi_reset(struct tmio_mmc_host *host)
TMIO_MASK_INIT_RCAR2);
}
/*
* This is a temporary workaround! This driver used 'hw_reset' wrongly and the
* fix for that showed a regression. So, we mimic the old behaviour until the
* proper solution is found.
*/
static void renesas_sdhi_hw_reset(struct mmc_host *mmc)
{
struct tmio_mmc_host *host = mmc_priv(mmc);
renesas_sdhi_reset(host);
}
#define SH_MOBILE_SDHI_MIN_TAP_ROW 3
static int renesas_sdhi_select_tuning(struct tmio_mmc_host *host)
@ -1009,6 +1020,8 @@ int renesas_sdhi_probe(struct platform_device *pdev,
if (of_data && of_data->scc_offset) {
priv->scc_ctl = host->ctl + of_data->scc_offset;
host->reset = renesas_sdhi_reset;
host->ops.hw_reset = renesas_sdhi_hw_reset;
host->mmc->caps |= MMC_CAP_HW_RESET;
}
}